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Case Reports
Journal Article
Central retinal vein occlusion following hypobaric chamber exposure.
Aviation, Space, and Environmental Medicine 2013 September
BACKGROUND: Mountain climbers who ascend to a high altitude could suffer high altitude retinopathy, which varies from tortuous retinal vessels and hemorrhages to retinal vascular obstruction. As hypobaric chamber training could imitate a fast ascent and could lead to decompression sickness, a simulated flight could also lead to a high altitude retinopathy.
CASE REPORT: This paper will present a case of central retinal vein occlusion that occurred after exposure to a hypobaric chamber and Valsalva maneuver. Although the patient was treated with an intravitreal bevacizumab injection, his macular edema was aggravated after a helicopter flight, which involved re-exposure to high altitudes and a Valsalva maneuver.
DISCUSSION: Systemic evaluation including blood coagulation and carotid Doppler studies did not reveal any lesion. Notably, central retinal vein occlusion can occur in young, healthy individuals after hypobaric chamber exposure.
CASE REPORT: This paper will present a case of central retinal vein occlusion that occurred after exposure to a hypobaric chamber and Valsalva maneuver. Although the patient was treated with an intravitreal bevacizumab injection, his macular edema was aggravated after a helicopter flight, which involved re-exposure to high altitudes and a Valsalva maneuver.
DISCUSSION: Systemic evaluation including blood coagulation and carotid Doppler studies did not reveal any lesion. Notably, central retinal vein occlusion can occur in young, healthy individuals after hypobaric chamber exposure.
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